Printing apparatus



y 30 1929. c. B. mussELL v 1,722,119

PRINTING APPARATUS Filed April 6. 1928 SSheets-Sheet 1 c. B. TRUSSELL 3&79 r July 30, 1929. c TRUSSELL 1,722,719

' PRINTING APPARATUS Filed April 6. 1928 5 Sheets-Sheet 2 gwumkoz c.B.TRUSSEL L July 30, 1929. c B, TRUSSELL 1,722,719

PRINTING APPARATUS Filed April 6. 1928 3 Sheets-Sheet 3 gwvenlo't C.BVTRUSSELL atknmy Patented July 30, 1929.

PATENT OFFICE.

CLYDE B. TRUSSELL, OF OMAHA, NEBRASKA.

PRINTING APPARATUS.

Application filed April 6, 1928. Serial No. 268,063.

This invention relates to an apparatus for printing or producingphotographs and has for its object to provide such a construction thatthe work of printing on sensitized paper from transparent negatives maybe more quickly accomplished than ordinary, the parts to be of sucharrangement that opera- .tion will be convenient, and means will beprovided for timing the exposure of the sensitized paper.

With the foregoing objects in view the invention presents a new anduseful con struction, combination and arrangement of parts'as describedherein and claimed, and

as illustrated in the accompanying drawing,

wherein,

Fig. 1 is a plan view of the apparatus, a part of the hood being brokenaway. Fig. 2 is a view of the apparatus in longitudinal section. Fig. 3is a view showing a part of one of the sides of the apparatus, being adetail to illustrate the mounting of the pendulum. Fig. 4 is a view ofthe same taken at right angles to the view shown in Fig. 3. Fig. 5 is asectional view of the carrier-frame and parts thereon.

Referring now to the drawing for a more particular description, theapparatus is provided with a base 7 having a fiat bottom so that it mayrest on a table or other support for use by an operator at the front ofthe apparatus.

Disposed above and secured to the rear part of the base is a hood 8, thespacing of the hood from the base providing a rectangular recess 9between said base and hood. Numeral 10 indicates an illuminating elementwhich is disposed .in the hood for directing rays of light toward therecess.

I provide a carrier adapted to be reciprocated manually on the base,said carrier consisting, in part of an apertured, rectangular frame 11adapted to be moved upon a pair of parallel side-bars 12 of the base, ahandle 13 being provided for this purpose.

Seated in therectangular aperture of the carrier-frame 11 is aholder-plate 14, preferably of rectangular form, upon which sensitizedsheets 15 may be placed, said plate being secured to a pivot-pin 16having bearin" in the ends of the frame 11. i

umeral 17 indicates a lug or detent-memher which is secured to the lowerart of the frame 11 which limits a rearwar swinging movement of theplate 14, and at 18 is indicated a spring which normally maintains saidplate in a position parallel with the carrier-frame 11, one end of thisspring being secured to said frame 11 and the opposite end of the springbeing mounted on the pivot-pin 16 of said holder-plate, as described,the front part of the holder-plate swings downwardly, and is released,it will swin by action of the spring 18 to approximate a horizontalposition, the rear part of said plate engaging the lug or detent l7.

Numeral 19 indicates an apertured, rectangular wing in which aphotographic negative 20 may be seated. This wing is pivotally mountedupon the rear part of the carrier-frame, as indicated at 21, and a partof its swinging movement is controlled by a spring 22, one end of thisspring being secured to a projection 23 of the carrier-frame and itsopposite end being secured to the wing, and as described, the wing andthe negative carried thereby may have swinging movements toward thecarrier-frame or outwardly therefrom, the tension of the spring 22,preferably, being such that the front part of the wing will normally bedisposed above the holder plate 14 and the sensitized sheet 15.

The hood is provided with springs 24 and guides 25. The base is providedwith a catch 26, and the pivot-pin 16 is provided at one of its endswith a latch 27.

In operation, the carrier-frame and parts thereon or attached thereto,is moved rearwardly on the base into the recess 9 to permit exposure ofthe negative and sensitized sheet to the illuminating element 10 toeffect the printing. The carrier is then moved outwardly from the recessand after the photograph or printed sheet has been removed and isreplaced by a second sensitized sheet, the operation may be repeated,and on account of the arrangement of parts as described the work may berapidly performed.

It will be understood that while the carrier is moving into the recess 9the wing 19 will engage the guides 25 and will swing downwardly, thephotographic negative 20 engaging the sensitized sheet 15, and as soonas the carrier has entered said recess the negative will be presseddownwardly against the sensitized sheet so that perfect photographingmay be accomplished.

Also it will he s en that while the carrier is moving outwardly from therecess the latch 27 of the pivot-pin 16 of the holderplate 14 will beengaged by the'catch of the base, the result being that the holderplatewill swing in a circles arc, the front part of said holder-plate movingdowwardly to cause disengagement of the photographed sheet. I

each operation of printing.

While this feature is important for the correct production ofphotographs, 1i] consists simply of a strand of wirebent between itsends .to provide a coiled spring 29, said strand providing an arm 30 towhich the pendulum is secured, and providing a leverarm 31 disposedapproximately at rightangles to the arm 30, said spring n9 being looselymounted on a horizontal pin 32 which projects forwardly of the apparatusfrom a standard33. v'lhis standard '33 projects upwardly from the hood,and as described the pendulum may swing in an arc,

the center of which is the horizontal pin 32,

the swinging movements of the pendulum' being approximately atright-angles to the sliding movements of the carrier-frame, andtherefore conveniently visible by an operator at the front of theapparatus.

The pendulum is actuated by a forward movementof the carrier-frame, andfor this purpose a bellcrank lever is mounted pivotally asindicated at34: upon the guide 35 of the hood,said bell-crank having an arm 35vextending upwardly for a pivotal con-.

nection with a link 36, the opposite end of the link being pivotallyconnected with tie arm 31. g g a The arm 37 of the bell-crank projectsdownwardly and forwardly of the apparatus, and the carrier-frame isprovided with arcatch 38 which projects outwardly from its end, and inoperation, when the'carrier moves toward the recess 9 the catch 38 willengage the lower arm 37 of the bell-crank, and since this arm will beswung rearwardly the arm 3.5 of said bell-cranlrwill be swung forwardlyfor moving the link 36 longitudinally, and this movement of the linkwill cause a downward swinging movement of the lever-arm 28 foractuation of the pendulunn V For operation, the spring 29 could bedispensed with, but its use is preferred since it adds'a slight degreeof force for moving the pendulum.

The duration of time of the exposure may depend upon the condition ofthe sensitized .paper sheets, generally three swinging movements of thependulum being sufficient, and by use of the pendulum an operator maylimit the timingfor producing photographs of uniform appearance. J

Vihile I haveshown and described a tim ing device and prefer its use, Ido not wish to beunderstood as'limiting myself in this respect, and Imaydispense-with the pendulum andstandard and other parts. of the timingmechanism, if desire V Also since the invention consists principally ofthe frame, the holder-plate for the sensitized sheet and aperturedwin-gfor containing a photographic" negative, it is considered that Imay, if desired, dispense. with the use of the base 7 the hood 8 andrecess 9, and may expose the negative and sensi- 'tized sheet to lightderived from any source,

and therefore I do not wish to limit myself 1n these respects, nortoform, size proportion of parts or minor details, except as limited bythe appended claims.

I claim as my invention,

1. Ina photographic printing apparatus, a base, a hood above andproviding a recess between the base and hood, an illuminating element inthe hood, a carrier including a rectangular frame, a holder-plate forsupporting a sensitized sheet 'pivotally mounted in the frame, means tolimit the pivotal movement of the holdersframe in one direction, arectangular wing hinged to the carrier-frame and having an aperture forreceiving a photogra )lllC negative, said carrier-frame being movable,on the base for conducting the sensitized sheet and negative into therecess for exposure to the illuminating element, and means on the vbaseforengaging apart of the holder-plate while the carrier-frame is movingoutwardly of the recess for moving said holder-plate in a eircles arc tocause disengagement of the sensitized sheet from the holder-plate.

2. In a photographic printing apparatus, a base provided'with a catch, ahood above the base providing a recess beneath the hood, an illuminatingelementin the hood, a .carrier consisting of a rectangular frame, aholder-plate for supporting a sensitized shee said plate being disposedwithinand pivotally mounted in said frame and provided with a latch,awing having an aper ture for receiving a photographicnegative engagingthe catch on said base for moving said plate in a circles arc to causeremoval of the sensitized sheet from the holder-plate. 10

In testimony whereof I have aflixed my signature.

CLYDE B. TRUSSELL.

